Dilatons in the topological soliton model for the hyperons

Details Dilatons in the topological soliton model for the hyperons Dilatons in the topological soliton model for the hyperons

1992-10-09

arxiv.org/abs/hep-ph/9210224v1

Nucl.Phys. A560 (1993) 985-996

Physics

High Energy Physics

High Energy Physics - Phenomenology

13 pages

Scientific paper

10.1016/0375-9474(93)90141-J

We show that the predicted hyperon masses in the topological soliton model are very sensitive to the value of the gluon condensate parameter that appears when the scale invariance and trace anomaly of QCD are taken into account by introduction of a dilaton field. This contrasts with the insensitivity of the soliton properties to the dilaton coupling. In order that the predicted strange and charmed hyperon spectra agree with the empirical ones the gluon condensate parameter has to be about (400 MeV)$^4$, which agrees with the result obtained from QCD sum rules. This implies that the bag formed by the scalar field must be very shallow.

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